Number of results: 6,922
Chemistry - Stoichiometry
16.2g of magnesium reacts exactly with 25.3g of fluorine to produce magnesium fluoride, the only product. How many grams of magnesium fluoride could be produced from the reaction of 10.5g of magnesium with excess fluorine. This is simple if you use ratios... You know that 16.2...
Thursday, August 25, 2005 at 2:49pm by Kevin
When hydrogen selenide gas reacts with oxygen, selenium dioxide and steam are produced. How many liters of selenium dioxide would be produced from 5.50 L of oxygen? Assume 90% yield and that all gases are measured at the same temperature and pressure. Balance the equation: ...
Sunday, October 15, 2006 at 9:08pm by Anonymous
How would you solve this problem?... magnesium metal reacts rapidly in hot water. Predict the mass of pericipitate that will form if a 2.0g strip of magnesium reacts completely with water. *Use the 5-step method* *Answer: 4.8g* I dont know what the five step method is, and I ...
Tuesday, October 24, 2006 at 12:23am by B
Setting up a chem problem
Magnesium reacts with water in the equation, Mg+2H²O-->Mg(OH)²+H². You have 8.1 g of magnesium available. This means you will need ___ g of water to use all the magnesium. This seems sorta simple, but how can i set it up? These are stoichiometry problems. They can be solved...
Thursday, January 18, 2007 at 11:22pm by Briana
Nitrogen oxide (NO) has been found to be a key component in the many biological processes. It also can react with oxygen to give the brown gas NO2. When one mole of NO reacts with oxygen, 57.0 kJ of heat is evolved. a) Write the thermochemical equation for the reaction between...
Monday, January 29, 2007 at 6:39pm by Christopher
when 18.66 g of magnesium react with 22.28g of oxygen, 30.94g of megnesium oxdie forms. If all the magnesium reacts, how many grams of oxygen remain un-reacted?
Tuesday, November 20, 2007 at 7:02pm by jason
An element, M, reacts with oxygen to give an oxide of formula M3O4. A sample of M of 257 mg is placed in a 500.0 mL vessel containing oxygen at 0.991 atm and 23.0°C. After cooling the vessel back to the original temperature, the pressure was 0.813 atm. Calculate the molar mass...
Saturday, February 2, 2008 at 5:02pm by Student
In the formation of acid rain, sulfur dioxide reacts with oxygen and water in the air to form sulfuric acid. Write the balanced chemical equation for the reaction. 2 SO2 + 1 O2 + 2 H2O --> 2 H2SO4 If 5.45 g SO2 react with excess oxygen and water, how many grams of H2SO4 are...
Sunday, February 3, 2008 at 9:49pm by ChaCha
write the chemical equations for the following sentences a) Aluminum reacts with oxygen to produce aluminum oxide I put Al + O2 ----------> 2Al2O3 b) Phosphoric acid, H3PO4, is produced through the reaction between tetraphosphorous decoxide and water I put P4O10 + 6H2O...
Wednesday, March 26, 2008 at 4:52pm by john
2.241g sample of nickel reacts w oxygen to form 2.85g of the metal oxide. Calculate the empirical formula of the oxide?
Monday, March 31, 2008 at 1:39pm by lizzie
I really need help for my homework on how to write the balanced equation for the following reactions. 1) Sodium reacts with iron(lll)oxide to produce sodium oxide and iron. Type of reaction: Balanced Equation: 2) Hydrogen bromide forms from hydrogen and bromine. Type of ...
Tuesday, April 8, 2008 at 5:49pm by Lisa
They form non-metallic oxides. For example, carbon reacts with oxygen to form either CO or CO2 (depending upon the amount of oxygen present) but both are non-metallic oxides. C + O2 ==> CO2 or 2C + O2 ==> 2CO
Tuesday, August 26, 2008 at 2:04pm by DrBob222
Use the reaction that occurs when magnesium burns in oxygen to show how a reaction might be included in more than one category of reaction.
Tuesday, November 25, 2008 at 8:42pm by Bubba
Ammonia reacts with oxygen in the presence of a platinum catalyst to give nitric oxide and water, according to the following gas phase equilibrium: 4NH_3(g) + 5O_2(g) <---> 4NO(g) + 6H_2O(g) ÄH = −906 kJ mol^−1 What is an appropriate equilibrium expression ...
Saturday, January 3, 2009 at 7:32pm by trigger
When burning a Magnesium Ribbon, would the color (the white dust) that it changed to be a chemical change? Or how about the spark it makes (I am just in basic chemistry, so that spark might be counted as a chemical change)? So far I got from the help for Drbob: 1.Reacts with ...
Thursday, January 29, 2009 at 7:06pm by Chopsticks
Magnesium reacts with oxygen to form magnesium oxide according to the following equation: 2Mg(s) + O2(g) ==> 2MGO(s) If 0.81 grams of magnesium oxide are formed, how many grams of oxygen reacted?
Wednesday, May 5, 2010 at 8:52pm by Danny
When magnesium is heated in air, it reacts with oxygen to form magnesium oxide. 2Mg + O2 --> 2MgO If the mass of the magnesium increases by 0.335 g, how many grams of magnesium reacted? A. 0.882 B. 0.441 C. 0.509 D. 1.02 E. Not enough Info
Monday, July 5, 2010 at 10:31pm by Kristen
Can you tell me if these are right please? When 2.50g of copper reacts with oxygen the copper oxide product has a mass of 2.81g. What is the simplest formula of the copper oxide. I got Cu2O (copper (I) oxide). Aluminum and oxygen gas react to produce aluminum oxide. A.) write ...
Tuesday, October 19, 2010 at 12:04pm by Jason
Solid magnesium reacts with oxygen gas to produce 568g of solid magnesium oxide.
Wednesday, January 16, 2013 at 9:31pm by Emmaly
When magnesium burns in air, it reacts with oxygen and nitrogen, forming magnesium oxide and magnesium nitride. If 20.0L of air is available for this reaction, what mass of each compound can be formed? (Remember air is about 80% Nitrogen and 20% Oxygen)
Thursday, March 7, 2013 at 5:42pm by Chase